refactor: Unify sync server and combine torch with connection UI

- Consolidate git and torch WebSocket servers on port 4105
- Create separate handlers for git and torch in handlers/ directory
- Combine TorchButton with connection status into single pill button
- Remove StatusBar (now redundant with TorchButton)
- Remove auto-assign torch on register/disconnect
- Remove auto-connect to MCP on page load
- Connection only happens when user explicitly requests torch

server/services/handlers/git-handler.ts

@@ -0,0 +1,86 @@
+/**
+ * Git Handler
+ * Handles git file watching and client notifications for the sync server.
+ */
+
+import { watch, type FSWatcher } from 'fs'
+import { join } from 'path'
+
+// Git watcher state
+let gitWatcher: FSWatcher | null = null
+let debounceTimer: ReturnType<typeof setTimeout> | null = null
+const DEBOUNCE_MS = 300
+
+// Files to ignore
+const IGNORE_PATTERNS = [
+  'FETCH_HEAD',
+  'gc.log',
+  '.lock',
+  'COMMIT_EDITMSG',
+  'ORIG_HEAD',
+  'gitk.cache',
+  'sourcetreeconfig',
+  '.DS_Store',
+  'fsmonitor',
+  'packed-refs'
+]
+
+/**
+ * Set up git directory watcher
+ */
+export function setupGitWatcher(workingDir: string, broadcast: (message: string, filter?: (ws: any) => boolean) => void) {
+  const gitDir = join(workingDir, '.git')
+
+  try {
+    gitWatcher = watch(gitDir, { recursive: true }, (_, filename) => {
+      if (!filename) return
+
+      // Ignore noisy files
+      if (IGNORE_PATTERNS.some(p => filename.includes(p))) return
+
+      // Only meaningful changes
+      const isRelevant =
+        filename.includes('refs/') ||
+        filename === 'HEAD' ||
+        filename === 'index' ||
+        filename.includes('objects/')
+
+      if (!isRelevant) return
+
+      // Debounce
+      if (debounceTimer) clearTimeout(debounceTimer)
+      debounceTimer = setTimeout(() => {
+        console.log(`[Git] Change: ${filename}`)
+        broadcast(JSON.stringify({
+          type: 'git-change',
+          timestamp: Date.now()
+        }))
+      }, DEBOUNCE_MS)
+    })
+
+    console.log(`[Git] Watching ${gitDir}`)
+  } catch (e: any) {
+    console.error(`[Git] Watch failed: ${e.message}`)
+  }
+}
+
+/**
+ * Handle new git client connection
+ */
+export function handleGitClient(ws: any) {
+  ws.send(JSON.stringify({ type: 'connected' }))
+}
+
+/**
+ * Cleanup git watcher
+ */
+export function cleanupGitWatcher() {
+  if (gitWatcher) {
+    gitWatcher.close()
+    gitWatcher = null
+  }
+  if (debounceTimer) {
+    clearTimeout(debounceTimer)
+    debounceTimer = null
+  }
+}